As a programmer and meteorology enthusiast, I'd love to be able to get latitude/longitude of tropical storms/hurricanes (specifically in the Atlantic). Does anyone know of websites that can provide information regarding tropical activity? I looked at the NWS's API (http://graphical.weather.gov/xml/), but it doesn't seem to give such data.

Wunderground has a quite extensive hurricane archive (since 1851), unfortunately they are a commercial organisation, so you'll probably have to pay for API integration with their historic data. A webpage of the data is here: https://www.wunderground.com/hurricane/hurrarchive.asp